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OEM Carrier Contactor 2-Pole 24V Coil for LC748LCCSRMPX2100
Carrier

OEM Carrier Contactor 2-Pole 24V Coil for LC748LCCSRMPX2100

SKU: CARRIE-LC748LCCSRMPX2100-CONTACTOR-HN52TC040 Brand: Carrier

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 2-Pole Contactor 24V Coil for Model LC748LCCSRMPX2100

This is the factory OEM replacement contactor (part number HN52TC040) for the Carrier LC748LCCSRMPX2100. The contactor is the high-voltage relay that bridges 240V power from your disconnect to the compressor and condenser fan motor when the thermostat calls for cooling. When the contactor fails — whether from pitted contacts, a burned coil, or a stuck plunger — the system will either refuse to start entirely, cycle on and off erratically, or run continuously without responding to the thermostat. Replacing it with the correct OEM part ensures proper contact resistance and coil pull-in voltage, protecting your compressor investment.

  • Specs: 2-Pole configuration | 24V control coil | Factory-rated amperage for Carrier LC748LCCSRMPX2100 | Matched contact material and spring tension per OEM specification
  • OEM vs Generic: OEM contactors like the HN52TC040 use factory-spec contact alloys and coil windings. Generic substitutes frequently exhibit higher contact resistance and shorter coil life, leading to premature compressor wear and repeat service calls.
  • Install difficulty: 3/5 — Always shut off power at the disconnect and verify zero voltage with a multimeter before proceeding. Tools needed: flathead and Phillips screwdrivers, 1/4" nut driver, needle-nose pliers, multimeter. Photograph all wiring before disconnecting. Discharge any capacitors in the same compartment before working.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our climate-controlled warehouse.

Compatibility: Designed and factory-spec'd for the Carrier LC748LCCSRMPX2100. Always confirm the OEM part number HN52TC040 against your unit's wiring diagram or data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before your order ships — no guesswork required.

Shipping Information

  • Orders placed before 3PM CST ship same business day
  • Standard delivery: 2-5 business days
  • Express shipping available at checkout
  • Free shipping on orders over $75
  • Tracking number emailed upon shipment

Return Policy

  • 30-day returns on unused parts in original packaging
  • Electrical parts (capacitors, contactors, control boards) are final sale once installed
  • Email info@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Contactor fit my Carrier LC748LCCSRMPX2100?
Yes. This is the factory-specified OEM contactor for the Carrier LC748LCCSRMPX2100. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.
How do I replace the contactor on my Carrier LC748LCCSRMPX2100?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.
My AC clicks but the compressor won’t turn on. What’s wrong?
Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.
Is this contactor compatible with Bryant or Payne too?
Many Carrier parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.
Should I use OEM or aftermarket for my Carrier contactor?
OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.
How fast does National HVAC Parts ship?
Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.
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Mike Rivera
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